78381661 is an odd 8-digits composite number following 78381660
and preceding 78381662 . In scientific notation, it is written as 7.8381661 × 10^7.
The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors.
There are 77317632 positive integers (up to 78381661) that are relatively prime to 78381661.
78381661 has 8 divisors, whose sum is 79451840
The reverse of 78381661 is 16618387
Previous prime number is 283
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4
Name
seventy-eight million three hundred eighty-one thousand six hundred sixty-one
Scientific notation
7.8381661 × 10^7
Engineering notation
7.8381661 × 10^6
Prime Factorization
103 × 283 × 2689
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
78381661
Product of the distinct prime numbers
The prime factorization of 78381661 is 103 × 283 × 2689.
Since it has a total of 3 prime factors.
1 , 2 , 26 , 31 , 854 , 759 , 8347 , 1340 , 2549 , 92075 , 170092 , 946776 , 8518137 , 9501891 , 71906759 , 93217065 , 729343856 , 504916217 , 1070170423 , 4814352599
n×2
156763322
n×3
235144983
n×4
313526644
n×5
391908305
n÷2
39190830.5
n÷3
26127220.333333
n÷3
19595415.25
n÷5
15676332.2
n2
6143684781118921
n3
4.8155221780452E+23
n4
3.7744862689752E+31
n5
2.9585050318397E+39
2 √n
8853.3417984397
3 √n
427.96161802432
4 √n
94.092198393064
5 √n
37.917779130132
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-78381660
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 78381661 can be divided by 8 positive divisors.
The sum of these divisors (counting 78381661) is 1, the average is 0.125.
Base
System
Value
2
Binary
100101011000000001001011101
3
Ternary
12110111012102111
4
Quaternary
10223000021131
5
Quinary
130031203121
6
Senary
11435554021
8
Octal
453001135
10
Decimal
78381661
12
Duodecimal
222bb911
16
Hexadecimal
4ac025d
20
Vigesimal
149he31
36
Base36
1anzod
md5
9ba47bd0363dad6e25cdd8c8a0b9d5aa
sha1
3ee0160e9c6b0f79b35dfe57d2fef00361fb6cc9
sha256
42867af11c084f0eea984054558eef54ef2bf690b27dd23c50bfc9152d6eca4a
sha512
56f8c585fe4ce2114a0b696ddb70bea2c3401c4179f70a73f62e6c01f3e6b236223fe7af3938b3e45598cdefd509574b03eb7cb977805140e44777760afbb5fb
ripemd-160
7a73818ea4ea03e3f3fd7730d41e741393dec5c1
Diameter
156763322
Circumference
492486500.74753
Area
1.9300954974335E+16
Volume
2.0171212130327E+24
Surface area
7.7203819897338E+16
Circumference
492486500.74753
Perimeter
313526644
Area
6143684781118921
Diagonal
110848408.02753
Surface area
36862108686713526
Volume
4.8155221780452E+23
Space diagonal
135761019.23364
Perimeter
235144983
Area
2.6602935466464E+15
Altitude
67880509.61682
Surface area
2.6602935466464E+15
Volume
5.67514731175E+22
Height
36949469.34251